//
//  UIBarButtonItem+Extension.swift
//  SinaWeibo
//
//  Created by apple on 15/11/18.
//  Copyright © 2015年 apple. All rights reserved.
//

import UIKit

extension UIBarButtonItem {
    
    //自定义barbuttonItem的便利构造函数
    //通过图片
    convenience init(imageName: String,target: AnyObject?, actionName: String?) {
        let btn = UIButton(type: .Custom)
        btn.setImage(UIImage(named: imageName), forState:.Normal)
        btn.setImage(UIImage(named: imageName + "_highlighted"), forState: .Highlighted)
        if let action = actionName, targetObj = target {
            btn.addTarget(targetObj, action: Selector(action), forControlEvents: .TouchUpInside)
        }
        btn.sizeToFit()
        
        self.init(customView:btn)
    }
}
